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Showing 1–8 of 8 results
Advanced filters: Author: Enrico Santamato Clear advanced filters

  • The more degrees of freedom a quantum observable has, the more complicated it is to measure its probability distribution. Here, the authors deduce the mean and variance of an infinite-dimensional variable, the orbital angular momentum of light, from a two-dimensional one: spin angular momentum.

    • Bruno Piccirillo
    • Sergei Slussarenko
    • Enrico Santamato
    ResearchOpen Access
    Nature Communications
    Volume: 6, P: 1-7

  • The first observation of the Hong–Ou–Mandel coalescence of photons with orbital angular momentum (OAM) is demonstrated, and this is exploited for optimal quantum cloning of OAM-encoded qubits. OAM states may function as units of quantum information in higher-dimensional space and allow increased information content per photon.

    • Eleonora Nagali
    • Linda Sansoni
    • Enrico Santamato
    Research
    Nature Photonics
    Volume: 3, P: 720-723

  • Quantum information circuits for ‘quantum joining’ are proposed, in which two qubits of information encoded in the polarization of two photons are re-encoded into the polarization and path degrees of freedom of a single photon, while keeping the overall quantum information constant. The inverse ‘splitting’ process is also proposed.

    • Chiara Vitelli
    • Nicolò Spagnolo
    • Lorenzo Marrucci
    Research
    Nature Photonics
    Volume: 7, P: 521-526

  • Topological phases play a fundamental role in a variety of physical systems, yet there is a lack of efficient tools for revealing the occurrence of associated quantum transitions. Here, Cardano et al.report that such transitions can be identified in the statistics of quantum-walk dynamics and validate this idea in a photonic experimental implementation.

    • Filippo Cardano
    • Maria Maffei
    • Lorenzo Marrucci
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-8

  • The detection of topological invariants in the bulk remains challenging even in state-of-the-art experiments. Here, Cardanoet al. propose a method to read-out the Zak phases and topological invariants in one-dimensional chiral systems and detect those in a photonic quantum walk of twisted photons.

    • Filippo Cardano
    • Alessio D’Errico
    • Pietro Massignan
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-7

  • A mechanism for confining and guiding light that relies on spin–orbit interactions of light is presented.

    • Sergei Slussarenko
    • Alessandro Alberucci
    • Lorenzo Marrucci
    Research
    Nature Photonics
    Volume: 10, P: 571-575